記事概要

AND
OR
記事タイトル
質感に関わる光学測定とその解釈
発刊年月日
2026年3月 Vol.110 第2号
著者名
大住雅之
企業・団体名
(株)オフィス・カラーサイエンス
記事種別
特集資料・講演など
抄録(ABSTRACT)
The material appearance of ancient Japan crafts has a complex surface structure brought about by elaborate techniques and ingenuity. Optical measurement of the color and texture of crafts at a high dimensional is very useful for understanding itself. Techniques include gonio-photometric spectral imaging, surface analyzer measurements, and observation of microstructures by high-resolution microscopy. In particular, in order to capture the characteristics of optical anisotropy related to shadows, it is possible to mathematically grasp the elements related to the texture of the object by performing gonio-photometric spectroscopy and analyzing the distribution in the color space for each angle. In this paper, we introduced the measurements made so far, such as KOFUKUSA and YUTEKI-TENMOKU, back colored painting, gold and silver leaf, Noh costume, and tearoom
TENGOAN.
図表タイトル

図1 質感の要素 Fig.1 The elements of material appearance SHITSUKAN.
図2 変角分光イメージング装置 Fig.2 Gonio-photometric spectral imaging.
図3 緞子古帛紗と油滴天目表面の光学幾何条件による違い Fig.3 Differences between the optical geometry of the surface of KOFUKUSA and YUTEKITENMOKU.
図4 紅葉小禽図裏彩色技法有無の比較 Fig.4 Comparison of the presence or absence of URASAISHIKI technique of KOYO-SHOKINZU.
図5 裏彩色技法有無による色域の比較(上段:裏彩色あり 下段:裏彩色なし) Fig.5 Comparison of color gamut with or without URASAISHIKI techniques (top row: with URASAISHIKI, bottom row: without URASAISHIKI).
図6 金箔表面の顕微鏡観察 Fig.6 Microscopic observation of gold leaf surfaces.
図7 金銀箔ドーサ引の有無による変角分光光度計反射率測定 Fig.7 The reflectance measurement of gold and silver leaf by the gonio-photometric spectrophotometer.
図8 金箔の変角分光イメージングによるL*C*分布 Fig.8 L *C* distribution by gonio-photometric spectral imaging of gold leaf.
図9 能装束の質感計測(上段:能装束と分光イメージング測定システム 中断: CIELAB空間上の画像の出現分布 下段:端切表面の反射強度測定結果) Fig.9 The material appearance SHITSUKAN measurement of Noh costumes.
図10 茶室転合庵内の網代天井・土壁・畳 Fig.10 AJIRO ceiling, cray wall, and tatami mat in the tearoom TENGO-AN.
図11 畳及び杉枌板の変角分光イメージング測定 Fig.11 Gonio-photometric spectral imaging measurements of tatami mats and cedar boards.

キーワード
material appearance | 質感 | surface structure | 光学計測 | 表面構造 | optical measurement | cultural assets | illumination | 文化財 | 照明

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